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fa42e23c10
linux/drivers/gpu/drm/i915
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Paulo Zanoni fa42e23c10 drm/i915: fix intel_init_power_wells 
The current code was wrong in many different ways, so this is a full
rewrite. We don't have "different power wells for different parts of
the GPU", we have a single power well, but we have multiple registers
that can be used to request enabling/disabling the power well. So
let's be a good citizen and only use the register we're suppose to
use, except when we're loading the driver, where we clear the request
made by the BIOS.

If any of the registers is requesting the power well to be enabled, it
will be enabled. If none of the registers is requesting the power well
to be enabled, it will be disabled.

For now we're just forcing the power well to be enabled, but in the
next commits we'll change this.

V2:
  - Remove debug messages that could be misleading due to possible
    race conditions with KVMr, Debug and BIOS.
  - Don't wait on disabling: after a conversaion with a hardware
    engineer we discovered that the "restriction" on bit 31 is just
    for the "enable" case, and we don't even need to wait on the
    "disable" case.

Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-01-26 17:54:28 +01:00
..
dvo_ch7xxx.c drm/i915/dvo-ch7xxx: fix get_hw_state 2012-10-12 10:59:11 +02:00
dvo_ch7017.c drm/i915/dvo: implement get_hw_state 2012-09-06 07:58:52 +02:00
dvo_ivch.c drm/i915/dvo: implement get_hw_state 2012-09-06 07:58:52 +02:00
dvo_ns2501.c drm/i915/dvo: implement get_hw_state 2012-09-06 07:58:52 +02:00
dvo_sil164.c drm/i915/dvo: implement get_hw_state 2012-09-06 07:58:52 +02:00
dvo_tfp410.c drm/i915/dvo: implement get_hw_state 2012-09-06 07:58:52 +02:00
dvo.h Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2012-10-03 23:29:23 -07:00
i915_debugfs.c drm/i915: clear up wedged transitions 2013-01-20 13:11:16 +01:00
i915_dma.c drm/i915: extract hangcheck/reset/error_state state into substruct 2013-01-20 13:11:14 +01:00
i915_drv.c drm/i915: Set display_mmio_offset for VLV 2013-01-24 23:45:40 +01:00
i915_drv.h drm/i915: Add display_display_mmio_offset to intel_device_info 2013-01-24 22:26:42 +01:00
i915_gem_context.c drm/i915: Preallocate next seqno before touching the ring 2012-11-29 11:43:52 +01:00
i915_gem_debug.c UAPI: (Scripted) Convert #include "..." to #include <path/...> in drivers/gpu/ 2012-10-02 18:01:07 +01:00
i915_gem_dmabuf.c Merge tag 'drm-intel-next-2012-12-21' of git://people.freedesktop.org/~danvet/drm-intel into drm-next 2013-01-17 20:34:08 +10:00
i915_gem_evict.c drm/i915: Create a gtt structure 2013-01-17 22:33:56 +01:00
i915_gem_execbuffer.c drm/i915: Create a gtt structure 2013-01-17 22:33:56 +01:00
i915_gem_gtt.c drm/i915: Needs_dmar, not 2013-01-20 13:11:12 +01:00
i915_gem_stolen.c drm/i915: fixup overlay stolen memory leak 2012-12-18 16:06:51 +01:00
i915_gem_tiling.c drm/i915: Create a gtt structure 2013-01-17 22:33:56 +01:00
i915_gem.c drm/i915: use gem_set_seqno() on hardware init 2013-01-22 13:52:26 +01:00
i915_ioc32.c UAPI: (Scripted) Convert #include "..." to #include <path/...> in drivers/gpu/ 2012-10-02 18:01:07 +01:00
i915_irq.c drm/i915: clarify concurrent hang detect/gpu reset consistency 2013-01-21 20:14:59 +01:00
i915_reg.h drm/i915: fix intel_init_power_wells 2013-01-26 17:54:28 +01:00
i915_suspend.c drm/i915: don't save/restore DSPARB on gen5+ 2013-01-24 16:58:06 +01:00
i915_sysfs.c drm/i915: fixup l3 parity sysfs access check 2012-12-05 19:10:20 +01:00
i915_trace_points.c
i915_trace.h drm/i915: Allow DRM_ROOT_ONLY|DRM_MASTER to submit privileged batchbuffers 2012-10-17 21:06:59 +02:00
intel_acpi.c UAPI: (Scripted) Convert #include "..." to #include <path/...> in drivers/gpu/ 2012-10-02 18:01:07 +01:00
intel_bios.c Merge branch 'drm-next-3.8' of git://people.freedesktop.org/~agd5f/linux into drm-next 2012-12-10 20:03:58 +10:00
intel_bios.h UAPI: (Scripted) Convert #include "..." to #include <path/...> in drivers/gpu/ 2012-10-02 18:01:07 +01:00
intel_crt.c drm/i915: Always use adpa_reg 2013-01-26 17:29:52 +01:00
intel_ddi.c drm/i915: HDMI/DP - ELD info refresh support for Haswell 2013-01-22 20:05:56 +01:00
intel_display.c drm/i915: fix intel_init_power_wells 2013-01-26 17:54:28 +01:00
intel_dp.c drm/i915: Convert intel_dp to enum port 2013-01-24 22:26:21 +01:00
intel_drv.h drm/i915: fix intel_init_power_wells 2013-01-26 17:54:28 +01:00
intel_dvo.c Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2012-10-03 23:29:23 -07:00
intel_fb.c drm/i915: Remove use of gtt_mappable_entries 2013-01-20 13:09:20 +01:00
intel_hdmi.c drm/i915: Convert intel_hdmi to enum port 2013-01-24 22:25:59 +01:00
intel_i2c.c drm/i915: GPIO/GMBUS registers need an offset on VLV 2013-01-24 23:45:03 +01:00
intel_lvds.c drm/i915: Return the real error code from intel_set_mode() 2012-12-20 21:09:55 +01:00
intel_modes.c drm/i915: Add "Automatic" mode for the "Broadcast RGB" property 2013-01-20 13:09:44 +01:00
intel_opregion.c Linux 3.7-rc2 2012-10-22 14:34:51 +02:00
intel_overlay.c drm/i915: Create a gtt structure 2013-01-17 22:33:56 +01:00
intel_panel.c drm/i915: do not access BLC_PWM_CTL2 on pre-gen4 hardware 2012-12-04 22:30:25 +01:00
intel_pm.c drm/i915: fix intel_init_power_wells 2013-01-26 17:54:28 +01:00
intel_ringbuffer.c drm/i915: use gem_set_seqno() on hardware init 2013-01-22 13:52:26 +01:00
intel_ringbuffer.h Merge tag 'drm-intel-next-2012-12-21' of git://people.freedesktop.org/~danvet/drm-intel into drm-next 2013-01-17 20:34:08 +10:00
intel_sdvo_regs.h drm/i915: clear the entire sdvo infoframe buffer 2012-10-24 15:12:48 +02:00
intel_sdvo.c drm/i915: Provide the quantization range in the AVI infoframe 2013-01-20 13:09:45 +01:00
intel_sprite.c drm/i915: Bad pixel formats can't reach the sprite code 2012-11-11 23:51:14 +01:00
intel_tv.c drm/i915: Return the real error code from intel_set_mode() 2012-12-20 21:09:55 +01:00
Makefile